S
I
M
W
EW
S
S/A
S/B
S/C
S/D
S/E
S1
S2
SN
SM
SW
ARRAY
MEDIUM
OPAL
MICRO
SYMM
Symmetric optics are the ones with symmetric emission in relation to planes
α and β.
The symmetry between the two planes may be either identical (in this case
we are dealing with optics with square light distribution) or different (optics
with rectangular light distribution).
Example
Symmetric optic code: S/xx
where:
S = Symmetric
xx = the abbreviated name of the opening angle
For example: S/I - S/M - S/W - S/EW
By convention, we consider the beam opening of plane α.
Multiple optics within the same range of opening will be distinguished by
inserting the numerical value of the beam opening at the end.
For example: S/W50 - S/W60
Symmetric optic name
Mandatory
indications
Additional
indications
Type of optic
Type of opening
Opening angle
plane a
0° ÷ 20°
21° ÷ 45°
46° ÷ 75°
over 75°
Symmetric optics
Symmetrical optics for series of
luminaires with double light emission
This classification identifies the light emission typology of the luminaires
inside those series that contain models with direct, indirect and / or
combined light emission.
Name of symmetrical optics for luminaires with double light emission
Type of optic
Acronyms
Typology of light emission
Direct symmetrical light
Mainly symmetrical direct light
Evenly direct - indirect symmetrical light
Mainly symmetrical indirect light
Indirect symmetrical light
Mandatory
indications
Additional
indications
Type of opening
Description
Includes all symmetrical optics from Narrow to Wide for Power
LED
Includes all symmetrical optics from Narrow to Wide for COB
Free distribution
Medium beam diffuser
Wide beam diffusers
Symmetrical optic
XXIII
